公开(公告)号：DE69906231D1

公开(公告)日：2003-04-30

申请号：DE69906231

申请日：1999-12-17

Applicant: XEROX CORP

Inventor： LINDER MICHAEL J ,  MOORE CLAUDE E ,  YOW D GREGORY

IPC: B65H1/18 ,  B65H7/02 ,  B65H7/00

公开(公告)号：DE69906231T2

公开(公告)日：2003-09-25

申请号：DE69906231

申请日：1999-12-17

Applicant: XEROX CORP

Inventor： LINDER MICHAEL J ,  MOORE CLAUDE E ,  YOW D GREGORY

IPC: B65H1/18 ,  B65H7/02 ,  B65H7/00

公开(公告)号：JP2000191151A

公开(公告)日：2000-07-11

申请号：JP35672299

申请日：1999-12-15

Applicant: XEROX CORP

Inventor： LINDER MICHAEL J ,  MOORE CLAUDE E ,  YOW D GREGORY

IPC: B65H1/18 ,  B65H7/02

Abstract: PROBLEM TO BE SOLVED: To provide a method to statically and dynamically control height and an angle of a paper feeding tray of an electrostatic photograph printer. SOLUTION: Sensors to detect stack height of sheets are arranged at two points. A front edge positional sensor 340 which is the first sensor detects height of a stack in the neighborhood of a front edge 152 of the sheets. A stack height sensor 350 which is the second sensor detects height of the stack roughly in the neighborhood of a center of the sheets in the sheet carrier direction. A characteristic of the sheets, for example, a state of curl of the sheets can be presumed from relations of a position of a sheet support tray 210 and the stack height detected by the two sensors. The sheet support tray is ascended and descended, and inclined, and the stack is placed at a proper position in accordance with the characteristics of this state of curl, weight per unit area of the sheets input or automatically detected, etc.